package com.zretc.service;

import java.util.List;

/**
 * Created by Administrator on 2020/8/21.
 */
public interface ChatService {
    void getChatmanAndInit(String user);
    void sendAndSaveMsessage(String sendUser, String receiveUser, String msg);
    void getAndReceiveMsessage(String receiveUser);
    List<String> findUserByCondition(String userId);
}
